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arXiv · 1803.03002

Energy budget of cosmological first-order phase transition in FLRW background

Rong-Gen Cai·Shao-Jiang Wang
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Abstract

We study the hydrodynamics of bubble expansion in cosmological first-order phase transition in the Friedmann-Lema\^{\i}tre-Robertson-Walker (FLRW) background with probe limit. Different from previous studies for fast first-order phase transition in flat background, we find that, for slow first-order phase transition in FLRW background with a given peculiar velocity of the bubble wall, the efficiency factor of energy transfer into bulk motion of thermal fluid is significantly reduced, thus decreasing the previously-thought dominated contribution from sound wave to the stochastic gravitational-wave background.

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BibTeXRIS

Rong-Gen Cai, Shao-Jiang Wang. 2018-03-08. Energy budget of cosmological first-order phase transition in FLRW background. https://doi.org/10.1007/s11433-018-9216-7

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